Image uploading method based on C winform

The example implementation in this article uploads a picture to the specified folder and displays it in the PictrueBox control on the form.

The specific function code is as follows:

private void btnUpload_Click(object sender, EventArgs e)
{
  // create 1 A dialog box object 
  OpenFileDialog ofd = new OpenFileDialog();
  // Set the title for the dialog box 
  ofd.Title = " Please select the image to upload ";
  // Set the format of the filtered image 
  ofd.Filter = " Image format |*.jpg";
  // Sets whether multiple selection is allowed 
  ofd.Multiselect = false;
  // If you hit the OK button 
  if (ofd.ShowDialog()== System.Windows.Forms.DialogResult.OK)
  {
 // Get the full path to the file (including the suffix after the name) 
 string filePath = ofd.FileName;
 // Displays the file path in a text box 
 txtImgUrl.Text = filePath;
 // Find the file name like" 1.jpg "The one in front." \ The location of the" 
 int position = filePath.LastIndexOf("\\");
 // Extract the file name from the full path. 1.jpg " 
 string fileName = filePath.Substring(position+1);
 // Read the selected file and return 1 A flow 
 using (Stream stream = ofd.OpenFile())
 {
   // create 1 To write to the resulting file stream (note: create 1 Called" Images "Folder, if is using relative path, must be in this program Degug Create under directory 
   // If it's an absolute path, you can put it there. I'm using a relative path.) 
   using (FileStream fs = new FileStream(@"./Images/" + fileName, FileMode.CreateNew))
   {
 // Copies the resulting file stream to the write stream 
 stream.CopyTo(fs);
 // Writes data from the write stream to a file 
 fs.Flush();
   }
   //PictrueBOx  Displays the image, at which point the image has been copied 1 Copy of the Images Under folder, you're uploading 
   // As for uploading to other places, you can change your mind. This is just a demonstration 
   pbShow.ImageLocation = @"./Images/" + fileName;
  }
 }
}